Respuesta :

mhanifa

Answer:

  • 140.22 ft²

Step-by-step explanation:

Surface area is the sum of areas of 4 triangles.

Each triangle has:

  • b = 9 ft, h = 7.79 ft

Area of each triangle:

  • A = 1/2bh
  • A = 1/2*9*7.79 = 35.055 ft²

Surface area:

  • S = 4*35.055 = 140.22 ft²